Standard 1673, Edition 3
UL 1673

Standard for Electric Space Heating Cables

UL Bulletin Edition 3 Published Date: July 27, 2012 Last Revision: October 14, 2011


Summary of Topics m1673_3_20120727_sum.html

Subject 1673 (1693)

Bulletin Dated: July 27, 2012


The following topics were discussed at the meeting of the Standards Technical Panel for Electric Radiant Heating Panels and Cables:

1. International Harmonization

2. Review of the Goal of UL Standards for Electric Radiant Heating Cables and Panels

3. Radiant Heating Products in the U.S.: a) Categorization of Product Types; b) Definition of Radiation vs. Other Means of Heat Transfer (e.g. Heated floor might be considered conductive or convective)

4. U.S. Requirements for Radiant Heating Products (UL 1673, UL 1693, UL 1683): Mapping of each product type to a Standard

5. NEC Requirements for Radiant Heating Equipment: a) NEC sections that address heating cables and panels; b) Alignment and gaps between NEC and UL 1673, 1683, 1693; c) Future proposals for NEC changes

6. CEC Requirements for Radiant Heating Equipment

7. CSA Standards/Canadian Requirements for Radiant Heating Equipment

8. IEC Requirements for Radiant Heating Equipment: Comparison of Standards developed by IEC, Japan and New Zealand

9. UL 1683 Scope and Approval Process

10. Specific Technical Topics: a) Grounding vs. Shielding, Functional vs. Operational; b) Wet Location, Damp Location, Outside; c) Wattage Rating Linear vs. Per Square (SI/Metric); d) Low Voltage and Isolated Secondary; e) Fault Protection, GFCIs, AFCIs, or Other; f) Thermostats and/or Control Device; g) Insulated Conductors; h) Cold Leads; i) R Value and Vapor Barrier Threshold of Safety and Enforcement of Installation Instructions; j) Adjacent Material Compatibility (Installation/Application); k) Product Construction Material Compatibility and MTBF; l) Flame Spread Rating; m) Dynamic and Static Mechanical Withstand

11. Identifying Known Field Product Issues Not Currently Covered in Associated Standard

Back to Standard 1673, Edition 3

The cost to purchase this Standard varies depending on whether you are ordering a hardcopy, PDF or combination of the two. We also offer two different types of subscriptions: a one year and a three year.

You will be able to choose your purchase options on the following pages.


You have one or more subscriptions that will expire soon.


You have one or more licenses to assign


Additional information required

To serve you better, please update your account details.

Featured Standards

Recently Published

Coming Soon

UL 48
Electrical Signs
Revision Pages

Meters for Flammable and Combustible Liquids and LP-Gas
Revision Pages

UL 155
Tests for Fire Resistance of Vault and File Room Doors
Revision Pages

UL 310
Electrical Quick-Connect Terminals
New Edition

UL 19
Lined Fire Hose and Hose Assemblies
Revision Pages

UL 104
Elevator Door Locking Devices and Door or Gate Closed Detection Means
New Edition

UL 217
Smoke Alarms
Revision Pages

UL 294
Access Control System Units
Revision Pages